presumably: adv. used to say that you think something is probably true

翻译

教授的航班又晚点了，大概是恶劣的天气所致吧。
The professor’s flight was presumably delayed by the elements again.

造句

句子： Presumably, the high cost of raising a child leads to the low fertility rate.
翻译： 低生育率大概是高抚养成本导致的。
场景： 难怪大家对二孩政策不感冒……

句子： The civil war in Syria will presumably cause more civilian casualties.
翻译： 叙利亚的内战可能会造成更多的平民伤亡。
场景： 战争。